(4R)-4-[N-((1S)-1-{N-[(1S)-2-((2S,4R)-4-(Phenylmethoxy)-2-{N-[(phenylmethoxy)-N-propylcarbonylamino]carbamoyl}pyrrolidinyl)-1-(methylethyl)-2-oxoethyl]carbamoyl}-2-methylbutyl)-N-hydroxycarbamoyl]-4-[(2S)-2-(acetylamino)-3-carboxypropanoylamino]butanoic acid AIDS-162038 AIDS162038